Aerodynamic measurements in singers at usual, low, and high frequencies.
Dâmaris Poliana Lacerda Vieira, Viviane Souza Bicalho Bacelete, Bárbara Pereira Lopes and 2 others
Men's air pressure, resistance, and impedance rise significantly when they sing higher, while women's aerodynamic efficiency peaks at their usual speaking pitch.
These are descriptive measurements in 60 healthy singers, not a treatment effect.
Key findings
1In female singers, aerodynamic efficiency was the only parameter that differed significantly across frequencies: highest at usual frequency (mean 211.94 ppm), then high (168.34), then low (122.04), p < 0.001. Peak air pressure, mean airflow, aerodynamic power, resistance, and impedance all showed no significant difference across frequencies.
2In male singers, four parameters differed significantly with frequency: peak air pressure (usual 8.56, high 9.19, low 8.31 cmH2O, p = 0.035), aerodynamic resistance (usual 45.25, high 58.25, low 39.35, p = 0.001), acoustic impedance (usual 42.53, high 57.00, low 41.75, p = 0.001), and aerodynamic efficiency (usual 167.00, high 470.40, low 167.03 ppm, p < 0.001). Mean peak air pressure, mean airflow, and aerodynamic power did not differ significantly.
3Frequency variation produced greater aerodynamic changes in male singers than in female singers, with men showing significant shifts in pressure, resistance, and impedance while women showed a significant shift only in efficiency.
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What it does not show
Cross-sectional and descriptive; no intervention, no control group, no follow-up. Musical styles (popular, classical, opera) were not controlled in the sample, and the authors note this as a limitation. All participants were singers without voice changes; findings may not apply to singers with voice disorders or to non-singers. Single site, 60 participants; the authors do not report a power analysis. The high-frequency condition was defined as one octave above usual and the low condition as three tones below usual, which may not match the range a singer actually uses in performance.
Declared interests
Funded by CAPES (Brazilian postgraduate development program) and CNPq (Brazilian National Council for Scientific and Technological Development, process 304475/2023-8). No industry funding or commercial involvement declared.
The easy way to misread this
Do not read the higher air pressure and resistance in male singers at high frequency as a sign of poor technique or hyperfunction. The same data show their aerodynamic efficiency also rises at high frequency, and the study describes normal variation in healthy singers, not a deficit to correct.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →